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A platform for research: civil engineering, architecture and urbanism
Full-Scale Experimental Study on Fire Suppression Performance of a Water Mist System for Large Shipboard Machinery Spaces
Abstract As a clean fire extinguishing agent, water mist has been considered to be an alternative to Halon 1301 on shipboard. Recently, a new water mist system was designed for large shipboard machinery spaces. In order to test the fire suppression performance of this system, a full-scale shipboard machinery compartment having a volume of 1200 m3 was built. In this compartment, five fire scenarios, including diesel spray fires, diesel tray fires, and wood crib fires, were designed, and fire suppression parameters, including extinguishment time, compartment temperature, and gas concentrations, were measured. For all the scenarios, extinguishment times were typically less than 1 min, except for small fires. Average compartment air temperatures dropped to 70 °C within seconds after mist was activated. The CO concentrations of all the scenarios were below 4000 ppm, which was not life-threatening for short-term exposures. The test results indicated that this water mist system had an excellent ability to extinguish both obstructed and unobstructed Class B tray fires, Class B spray fires, and Class A fires in large machinery spaces. Meanwhile, the system could minimize the thermal damage to the compartment and its infrastructure and provide favorable conditions for personnel evacuation and firefighting. In conclusion, this newly designed water mist system was a viable alternative to Halon 1301 system for protecting large machinery spaces.
Full-Scale Experimental Study on Fire Suppression Performance of a Water Mist System for Large Shipboard Machinery Spaces
Abstract As a clean fire extinguishing agent, water mist has been considered to be an alternative to Halon 1301 on shipboard. Recently, a new water mist system was designed for large shipboard machinery spaces. In order to test the fire suppression performance of this system, a full-scale shipboard machinery compartment having a volume of 1200 m3 was built. In this compartment, five fire scenarios, including diesel spray fires, diesel tray fires, and wood crib fires, were designed, and fire suppression parameters, including extinguishment time, compartment temperature, and gas concentrations, were measured. For all the scenarios, extinguishment times were typically less than 1 min, except for small fires. Average compartment air temperatures dropped to 70 °C within seconds after mist was activated. The CO concentrations of all the scenarios were below 4000 ppm, which was not life-threatening for short-term exposures. The test results indicated that this water mist system had an excellent ability to extinguish both obstructed and unobstructed Class B tray fires, Class B spray fires, and Class A fires in large machinery spaces. Meanwhile, the system could minimize the thermal damage to the compartment and its infrastructure and provide favorable conditions for personnel evacuation and firefighting. In conclusion, this newly designed water mist system was a viable alternative to Halon 1301 system for protecting large machinery spaces.
Full-Scale Experimental Study on Fire Suppression Performance of a Water Mist System for Large Shipboard Machinery Spaces
Wu, Xiaowei (author) / Lu, Shouxiang (author)
Fire Science and Technology 2015 ; 877-886
2016-10-05
10 pages
Article/Chapter (Book)
Electronic Resource
English
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